• Code: C3461
• Description: New fusing unit new article release
  • A new installation is not detected when a new fusing Unit is installed.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the fusing unit, MFPB for proper connection and correct or change as necessary. 3 Reinstall fusing unit. 4 Change fusing unit. 5 Change MFPB.

• Code: C3751
• Description: Abnormal high temp. (heater)
  • The temperatures of the heating roller thermistor/ 1 (TH1) is higher than a given level of degree for 1 second or more uninterruptedly. • The heater relay is OFF.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the right door. 3 Check the fusing unit, MFPB and DCPU for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change MFPB. 6 Change DCPU.

• Code: C3752
• Description: Abnormal high temp. (press)
  • The temperature of the fusing pressure roller thermistor/1 (TH2) is higher than a given level of degree for 1 second or more uninterruptedly before the Heater temperature control starts. • The temperature of the fusing pressure roller thermistor/1 (TH2) is higher than a given level of degree for 1 second or more uninterruptedly after the heater temperature control starts.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the right door. 3 Check the fusing unit, MFPB and DCPU for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change MFPB. 6 Change DCPU.

• Code: C3851
• Description: Abnormal low temp. (Heater)
  • The temperature of the heating roller thermistor/1 (TH1) is lower than a given level of degree for 1 second or more uninterruptedly during ready mode, low power mode or printing. • With the normal fusing temperature control, if the counting value for the zero cross signal input was not modified for the specified period of time, the counting will be performed for the zero cross signal error detection. The malfunction will be detected when the counted error value is over the specified value.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the right door. 3 Check the fusing unit, MFPB and DCPU for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change MFPB. 6 Change DCPU.

• Code: C3852
• Description: Abnormal low temp. (press)
  • The temperature of the fusing pressure roller thermistor /1 (TH2) is lower than a given level of degree for 1 second or more uninterruptedly during ready mode, low power mode or printing.
• Remedy: 1 Check the fusing unit for correct installation (whether it is secured in position). 2 Check the open/close operation of the right door. 3 Check the fusing unit, MFPB and DCPU for proper connection and correct or change as necessary. 4 Change fusing unit. 5 Change MFPB. 6 Change DCPU.

• Code: C4151
• Description: Polygon motor/C failure to turn
  • The polygon motor fails to turn stably even after the lapse of a given period of time after activating the polygon motor.
  • Motor lock signal detects HIGH for a given period time consecutively during the polygon motor is rotating.
• Remedy: 1 Check the connector for proper connection and correct as necessary. 2 Change PH unit. 3 Change PHICB. 4 Change MFPB.

• Code: C4152
• Description: Polygon motor/M failure to turn
• Remedy: 1 Check the connector for proper connection and correct as necessary. 2 Change PH unit. 3 Change PHICB. 4 Change MFPB.

• Code: C4153
• Description: Polygon motor/Y failure to turn
• Remedy: 1 Check the connector for proper connection and correct as necessary. 2 Change PH unit. 3 Change PHICB. 4 Change MFPB.